, warning residents they could be without power for ten to 15 days. and chris christie is worried. that they might put generators indoors to get electricity. >> general new jersey. if it looks stupid it is stupid. >> reporter: already crews from the gulf of mexico to iowa are in their trucks, driving to the east coast in front of sandy's wrath. how bad could it be? believe it or not, this guy thinks he has an idea. a researcher at johns hopkins, he's put together a model, predicting, how many of us may lose power. remember, irene left 7 million without power. >> our model suggesting 10 million. >> reporter: roughly 10 million without power for a week or more. if 50 million feel the effects of this, that's 1 in 5, could be without electricity. if you're inland, think again, it could be a bad one. dan and bianna. >> it will go well inland. david kerley, thank you for your reporting. >>> another breaking story we're watching closely. a massive earthquake off the west coast triggered a tsunami warning in hawaii. our worst fears quelled for now at least. on our affiliate reports. >> ve